[RFC WIP PATCH v1 0/7] wandboard: add imx6dl rev d1 support

[Heiko Schocher]

This series is a RFC for adding support for the wandboard
revision d1 imx6dl boards. The first patch add the Device
tree from linux, the second add the detection for the
wandboard d1 imx6dl and imx6q versions. Both patches
are from Fabio.

Unfortunately this does not work out of the box, as for
the detection of D1 revisions in SPL only the PMIC can be
used. But we have no DM support in SPL on wandboard and adding
it would explod the size of SPL.

Solution:

- reorder board_fit_config_name_match to work correctly
  may can be merged with Fabios 2. patch

- enable CONFIG_DTB_RESELECT so we can detect revision in
  U-Boot before relocation and can reselect the correct
  devicetree.

- set imx6dl-wandboard-revd1 as default devicetree, so we
  have a devicetree which contains the PMIC.

- add u-boot specific devicetree, so i2c and pmic can
  be detected before relocation.

- use in SPL only revision D1 DTB

With this patchset, U-Boot boots on imx6dl revision D1 board
after a soft reset. On hardreset, the PMIC does not respond
on i2c bus ... and rev d1 gets not detected ... this needs
more investigation.

@Fabio (or others): please test, if this patchset does not
  break other board revisions!

Hack: If you need working current U-Boot on imx6dl rev d1
      board, you can use the first 2 patches from this
      patchset and change configuration to:

CONFIG_DEFAULT_DEVICE_TREE="imx6dl-wandboard-revd1"
CONFIG_OF_LIST="imx6dl-wandboard-revd1"

But this works only on imx6dl revision d1 boards.


Fabio Estevam (2):
  wandboard: Import the dts files for the other revd1 variants
  wandboard: Handle the imx6dl and imx6q revd1 boards

Heiko Schocher (5):
  wandboard: reorder board_fit_config_name_match
  wandboard: enable CONFIG_DTB_RESELECT
  wandboard: use imx6dl-wandboard-revd1 as default DTB
  wandboard: add u-boot specific *wandboard-revd1-u-boot.dtsi
  wandboard: in SPL use only D1 DTB

 arch/arm/dts/Makefile                         |  2 +
 .../dts/imx6dl-wandboard-revd1-u-boot.dtsi    | 11 ++++
 arch/arm/dts/imx6dl-wandboard-revd1.dts       | 19 +++++++
 .../arm/dts/imx6q-wandboard-revd1-u-boot.dtsi | 11 ++++
 arch/arm/dts/imx6q-wandboard-revd1.dts        | 23 ++++++++
 board/wandboard/wandboard.c                   | 53 ++++++++++++++++---
 configs/wandboard_defconfig                   |  5 +-
 7 files changed, 115 insertions(+), 9 deletions(-)
 create mode 100644 arch/arm/dts/imx6dl-wandboard-revd1-u-boot.dtsi
 create mode 100644 arch/arm/dts/imx6dl-wandboard-revd1.dts
 create mode 100644 arch/arm/dts/imx6q-wandboard-revd1-u-boot.dtsi
 create mode 100644 arch/arm/dts/imx6q-wandboard-revd1.dts

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2.24.1